What is M-theory simplified?

M-theory is a new idea in small-particle physics that is part of superstring theory that was initially proposed by Edward Witten. The idea, or theory, often causes arguments among scientists, because there is no way to test it to see if it is true.

Is M-theory proven?

String theory (or, more technically, M-theory) is often described as the leading candidate for the theory of everything in our universe. But there’s no empirical evidence for it, or for any alternative ideas about how gravity might unify with the rest of the fundamental forces.

Is M-theory the same as string theory?

In string theory, spacetime is ten-dimensional (nine spatial dimensions, and one time dimension), while in M-theory it is eleven-dimensional (ten spatial dimensions, and one time dimension).

How is string theory directly connected with M-theory?

One notable feature of string theory and M-theory is that these theories require extra dimensions of spacetime for their mathematical consistency. In string theory, spacetime is ten-dimensional (nine spatial dimensions, and one time dimension), while in M-theory it is eleven-dimensional (ten spatial dimensions, and one time dimension).

Is string theory still a viable theory?

2 Answers. A one proposition summary for this sketchy answer: String Theory is considered viable because it’s a working theory of quantum gravity and the feeling is that with further work it will became possible to relate theory with our world, that is to get predictions and experimental confirmation.

What is string theory, in a nutshell?

String Theory in a Nutshell is the staple one-volume reference on the subject not only for students and researchers of theoretical high-energy physics, but also for mathematicians and physicists specializing in theoretical cosmology and QCD .

How small are the strings in the string theory?

The strings of string theory are unimaginably small. Your average string, if it exists, is about 10-33 centimeters long. That’s a millionth of a billionth of a billionth of a billionth of a centimeter. If an atom were magnified to the size of the solar system, a string would be the size of a tree.